<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    /* p的后面的兄弟div */
    p~div{
      font-size: 100px;
    }
  </style>
</head>
<body>
  <div>div1</div>
  <p>p</p>
  <div>div</div>
  <div>div</div>
  <div>div</div>
  <div>div</div>
  <h1>h标题</h1>
</body>
</html>